Three-line golf putter attachment



FIG. 1 is a top, rear, and right perspective view of a three-line golfputter attachment according to the present design;

FIG. 2 is a top, front and left perspective view of a three-line golfputter attachment according to the present design;

FIG. 3 is a left side elevation view of a three-line golf putterattachment according to the present design;

FIG. 4 is a right side elevation view of a three-line golf putterattachment according to the present design;

FIG. 5 is a rear elevation view of a three-line golf putter attachmentaccording to the present design;

FIG. 6 is a front elevation view of a three-line golf putter attachmentaccording to the present design;

FIG. 7 is a top plan view of a three-line golf putter attachmentaccording to the present design; and,

FIG. 8 is a bottom plan view of a three-line golf putter attachmentaccording to the present design.

Broken lines are indicated in FIG. 1 for the purpose of illustrating agolf putter to which the three-line golf putter attachment is affixable,and form no part of the claimed design.

CLAIM The ornamental design for a three-line golf putter attachment, asshown and described.